Pith Number

pith:7FFGW5A4

pith:2004:7FFGW5A453AGJGASVHU3VOVCEZ

not attested not anchored not stored refs pending

GeV and higher energy photon interactions in gamma-ray burst fireballs and surroundings

Bing Zhang, Peter Meszaros, Soebur Razzaque

arxiv:astro-ph/0404076 v2 · 2004-04-04 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7FFGW5A453AGJGASVHU3VOVCEZ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:36:07.462348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f94a6b741ceec0649812a9e9babaa2265e7bbdaf6d3fd990681c617b1bc49907

Aliases

arxiv: astro-ph/0404076 · arxiv_version: astro-ph/0404076v2 · doi: 10.48550/arxiv.astro-ph/0404076 · pith_short_12: 7FFGW5A453AG · pith_short_16: 7FFGW5A453AGJGAS · pith_short_8: 7FFGW5A4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7FFGW5A453AGJGASVHU3VOVCEZ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: f94a6b741ceec0649812a9e9babaa2265e7bbdaf6d3fd990681c617b1bc49907

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eae44ebc589a70a0a79391bda61700900bb6e99944c3770baea9641f69af45b3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-04-04T06:14:54Z",
    "title_canon_sha256": "2f5e5673e909360ad5c291e27d156164ca759d4b4166fee07261f0aaacc109e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0404076",
    "kind": "arxiv",
    "version": 2
  }
}